message d'erreur gestionnaire de mises à jour xubuntu xenial

Bonjour,

j'ai de multiples erreurs ce doit être dans mon fichier sources.list

W:Target Packages (universe/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:16 and /etc/apt/sources.list:48
W:Target Packages (universe/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:16 and /etc/apt/sources.list:48,
W:Target Packages (universe/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:16 and /etc/apt/sources.list:48,
W:Target Translations (universe/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:16 and /etc/apt/sources.list:48,
W:Target Translations (universe/i18n/Translation-fr) is configured multiple times in /etc/apt/sources.list:16 and /etc/apt/sources.list:48,
W:Target DEP-11 (universe/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:16 and /etc/apt/sources.list:48, W:Target DEP-11-icons (universe/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:16 and /etc/apt/sources.list:48,
W:Target Packages (multiverse/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:24 and /etc/apt/sources.list:48,
W:Target Packages (multiverse/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:24 and /etc/apt/sources.list:48,
W:Target Packages (multiverse/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:24 and /etc/apt/sources.list:48,
W:Target Translations (multiverse/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:24 and /etc/apt/sources.list:48,
W:Target Translations (multiverse/i18n/Translation-fr) is configured multiple times in /etc/apt/sources.list:24 and /etc/apt/sources.list:48,
W:Target DEP-11 (multiverse/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:24 and /etc/apt/sources.list:48, W:Target DEP-11-icons (multiverse/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:24 and /etc/apt/sources.list:48,
W:Target Packages (restricted/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:10 and /etc/apt/sources.list:51, W:Target Packages (restricted/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:10 and /etc/apt/sources.list:51,
W:Target Packages (restricted/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:10 and /etc/apt/sources.list:51,
W:Target Translations (restricted/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:10 and /etc/apt/sources.list:51,
W:Target Translations (restricted/i18n/Translation-fr) is configured multiple times in /etc/apt/sources.list:10 and /etc/apt/sources.list:51,
W:Target DEP-11 (restricted/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:10 and /etc/apt/sources.list:51, W:Target DEP-11-icons (restricted/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:10 and /etc/apt/sources.list:51,
W:Target Packages (multiverse/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:25 and /etc/apt/sources.list:51,
W:Target Packages (multiverse/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:25 and /etc/apt/sources.list:51,
W:Target Packages (multiverse/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:25 and /etc/apt/sources.list:51,
W:Target Translations (multiverse/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:25 and /etc/apt/sources.list:51,
W:Target Translations (multiverse/i18n/Translation-fr) is configured multiple times in /etc/apt/sources.list:25 and /etc/apt/sources.list:51,
W:Target DEP-11 (multiverse/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:25 and /etc/apt/sources.list:51, W:Target DEP-11-icons (multiverse/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:25 and /etc/apt/sources.list:51,
W:Target Packages (restricted/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:32 and /etc/apt/sources.list:53,
W:Target Packages (restricted/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:32 and /etc/apt/sources.list:53,
W:Target Packages (restricted/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:32 and /etc/apt/sources.list:53,
W:Target Translations (restricted/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:32 and /etc/apt/sources.list:53,
W:Target Translations (restricted/i18n/Translation-fr) is configured multiple times in /etc/apt/sources.list:32 and /etc/apt/sources.list:53,
W:Target DEP-11 (restricted/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:32 and /etc/apt/sources.list:53, W:Target DEP-11-icons (restricted/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:32 and /etc/apt/sources.list:53,
W:Target Packages (multiverse/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:32 and /etc/apt/sources.list:53,
W:Target Packages (multiverse/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:32 and /etc/apt/sources.list:53,
W:Target Packages (multiverse/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:32 and /etc/apt/sources.list:53,
W:Target Translations (multiverse/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:32 and /etc/apt/sources.list:53,
W:Target Translations (multiverse/i18n/Translation-fr) is configured multiple times in /etc/apt/sources.list:32 and /etc/apt/sources.list:53,
W:Target DEP-11 (multiverse/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:32 and /etc/apt/sources.list:53, W:Target DEP-11-icons (multiverse/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:32 and /etc/apt/sources.list:53,
W:Target Packages (restricted/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:46 and /etc/apt/sources.list:52,
W:Target Packages (restricted/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:46 and /etc/apt/sources.list:52,
W:Target Packages (restricted/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:46 and /etc/apt/sources.list:52,
W:Target Translations (restricted/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:46 and /etc/apt/sources.list:52,
W:Target Translations (restricted/i18n/Translation-fr) is configured multiple times in /etc/apt/sources.list:46 and /etc/apt/sources.list:52,
W:Target DEP-11 (restricted/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:46 and /etc/apt/sources.list:52, W:Target DEP-11-icons (restricted/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:46 and /etc/apt/sources.list:52,
W:Target Packages (multiverse/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:46 and /etc/apt/sources.list:52,
W:Target Packages (multiverse/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:46 and /etc/apt/sources.list:52,
W:Target Packages (multiverse/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:46 and /etc/apt/sources.list:52,
W:Target Translations (multiverse/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:46 and /etc/apt/sources.list:52,
W:Target Translations (multiverse/i18n/Translation-fr) is configured multiple times in /etc/apt/sources.list:46 and /etc/apt/sources.list:52,
W:Target DEP-11 (multiverse/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:46 and /etc/apt/sources.list:52, W:Target DEP-11-icons (multiverse/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:46 and /etc/apt/sources.list:52, W:http://ppa.launchpad.net/cdemu/ppa/ubuntu/dists/xenial/InRelease: Signature by key AFDF4CC6A4F32AA9395FAE8F423A2125D782A00F uses weak digest algorithm (SHA1), E:Failed to fetch http://fr.archive.ubuntu.com/ubuntu/dists/xenial/universe/source/Sources.xz Hash Sum mismatch,
E:Failed to fetch http://fr.archive.ubuntu.com/ubuntu/dists/xenial/universe/binary-amd64/Packages.xz Hash Sum mismatch,
E:Failed to fetch http://fr.archive.ubuntu.com/ubuntu/dists/xenial/universe/binary-i386/Packages.xz Hash Sum mismatch,
E:Failed to fetch http://fr.archive.ubuntu.com/ubuntu/dists/xenial-proposed/universe/source/Sources.xz Hash Sum mismatch,
1E:Failed to fetch http://fr.archive.ubuntu.com/ubuntu/dists/xenial-proposed/universe/binary-amd64/Packages.xz Hash Sum mismatch,
E:Failed to fetch http://fr.archive.ubuntu.com/ubuntu/dists/xenial-proposed/universe/binary-i386/Packages.xz Hash Sum mismatch,
E:Some index files failed to download. They have been ignored, or old ones used instead.

ici, mon fichier sources.list

# deb cdrom:[Xubuntu 15.10 _xenial Werewolf_ - Release amd64 (20151021)]/ xenial main multiverse restricted universe
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://fr.archive.ubuntu.com/ubuntu/ xenial main restricted
deb-src http://fr.archive.ubuntu.com/ubuntu/ xenial restricted main universe multiverse #Added by software-properties
## Major bug fix updates produced after the final release of the
## distribution.
deb http://fr.archive.ubuntu.com/ubuntu/ xenial-updates main restricted
deb-src http://fr.archive.ubuntu.com/ubuntu/ xenial-updates restricted main universe multiverse #Added by software-properties
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://fr.archive.ubuntu.com/ubuntu/ xenial universe
deb http://fr.archive.ubuntu.com/ubuntu/ xenial-updates universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://fr.archive.ubuntu.com/ubuntu/ xenial multiverse
deb http://fr.archive.ubuntu.com/ubuntu/ xenial-updates multiverse
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://fr.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse
deb-src http://fr.archive.ubuntu.com/ubuntu/ xenial-backports multiverse main universe restricted #Added by software-properties
deb http://fr.archive.ubuntu.com/ubuntu/ xenial-security main restricted
deb-src http://fr.archive.ubuntu.com/ubuntu/ xenial-security multiverse main universe restricted #Added by software-properties
deb http://fr.archive.ubuntu.com/ubuntu/ xenial-security universe
deb http://fr.archive.ubuntu.com/ubuntu/ xenial-security multiverse
## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
deb http://archive.canonical.com/ubuntu xenial partner
deb-src http://archive.canonical.com/ubuntu xenial partner
deb http://fr.archive.ubuntu.com/ubuntu/ xenial-proposed restricted universe main multiverse
deb-src http://fr.archive.ubuntu.com/ubuntu/ xenial-proposed multiverse main universe restricted #Added by software-properties
deb http://fr.archive.ubuntu.com/ubuntu/ xenial universe multiverse
deb http://security.ubuntu.com/ubuntu/ xenial-security main restricted universe multiverse
deb-src http://security.ubuntu.com/ubuntu/ xenial-security main restricted universe multiverse #Added by software-properties
deb http://fr.archive.ubuntu.com/ubuntu/ xenial-updates restricted multiverse
deb http://fr.archive.ubuntu.com/ubuntu/ xenial-proposed restricted multiverse
deb http://fr.archive.ubuntu.com/ubuntu/ xenial-backports restricted multiverse